问题
选择题
We are going to have a barbecue _______ it rains .
A．if not
B．when
C．except that
D．unless
答案
答案：D
搜题请搜索小程序“爱下问搜题”
We are going to have a barbecue _______ it rains .
A．if not
B．when
C．except that
D．unless
答案：D